Valve-sealing device



N. H. FITZ GERALD AND 0.?1. MARVIN. 'VALVE SEALING DEVICE.

APPLICATION FILED MAY 25, 1922.

Patented Nov. M9 E922; EIA-5m@ v m /f *4W I @IM Y w pq W I I- A. I@ Mfg A I /A JWM n 0 I ,a M g n@ MM y V @n m J d I M o I 4 T I f 7% I n 4 TZ y @2% Patented Nov. 1d, 1922.

NTCLTOLAS H. FITZ GERALD AND OSCAR L. MARVIN, OF FINDLAY, OHO.

Application filed May 25,

.To @ZZ "Lo/wm t may cmi-cera.'

Be it known that we, Nroricnas H. Fira GERALD and OSCAR J. ll/lARvIN, citizens of the United States, residing at Findlay, in the county of Hancock and State of Ohio, have invented certain new and useful Tmprovements in Valve-Sealing Devices, ol which the following is a specilication, reference being had therein to the accompanying drawing. y

This invention relates to valves and one object of the invention is to provide a valve so constructed that it may be sealed and thus prevented .trom being tampered with by unauthorized persons.

Another object of the invention is to so construct the valve that the .hood portion may be easily and quickly put in place upon the head which carries the valve stem and secured in place by a pin which passes transversely through the hood and has one end projecting and perforated to receive a sealing lead or lock.

Another object of the invention is to so construct the head of the valve body through which the stern passes that the securing pin may be readily passed through an annular groove provided in the head.

This invention is illustrated in the accompanying drawings, wherein:

Figure l is a view showing the improved valve and hood in vertical section.

Figure 2 is a view showing the valve and hood in elevation with a portion of the hood broken away.

Figure 3 is a transverse sectional view taken along the line 3--3 of Fig. 2.

This improved valve is provided with a body or housing 1 having the usual valve seat 2 and above this valve .seat provided with a neck portion 3 which is externally threaded to carry an internally threaded securing nut or collar 4 provided with-an inwardly extending annular flange 5. The head 6 of the valve housing or body lits into the neck 3 and is provided with an ontstane ing flange or shoulder 7 which rests upon the upper edge of the neck and will be engaged by the flange 5 of the collar d so that when this collar l is screwed tightly down upon the neck 3, the head will be securely held in place. This head is provided with an internally threaded sleeve 8 and above the sleeve is provided with an upwardly extending neck portion 9 externally threaded at its upper end. ,and adjacent its upper end 1922. Serial No. 553,556,

provided with an internal shoulder lO. This internal annular shoulder 10 provides a pocket 1l in the upper portion of the neck 9 to receive packing which may be pressed into tight engagement with the valife stem` 12 when the packing nut 13 is screwed down upon the threaded upper end portion of the neck and forces the packing gland lll downwardly into the pocket. The valve stein l2 is provided intermediate its length with a threaded portion l5 to engage the threads of' the internally threaded sleeve 8 and has its lower end in swiveled connection with a valve head 16 movable onto and ott1 ot the valve seat 2. The valve stem extends through the nut 13 and when it is to be turned to move the valve head onto or ott oic the valve seat, its upper end will be engaged by a suitable turning cevice. *When the valve is closed, this turning device will be removed. Tn order to prevent opening of the valve by unauthorized persons, there has been provided a hood 17 which tits upon the head 6 and rests upon the upper tace ot the nut or collar d. The upper end oit this hood is provided with a. seat 17 to receive the upper end of the valve stem and the walls are provided with alined passages 18 through which a pin 19 may be passed. This pin 19 will be passed inwardly through one of the openings 18 and will then be passed through an annular groove 2O iormed in the head 6 of the valve housing and will then be passed outwardly through the second opening 18. At one end the pin is provided with an enlarged head 2l by which it will be grasped when inserted or removed. At its other end, the pin is flattened as shown at Q2 and'provided with an opening 23 so that a lock or lead and wire seal 24 can be put in place to prevent removal of the pin by unauthorized persons. By having the head 6 provided with an annular groove, no special care need be taken'when putting the hood in place. It will thus-be seen that this valve is so constructed that when shut, the hood can be put in place and secured against removal. This valve will be used for tank cars, storage tanks, and at any point where it is desired to permit the flow of material through a valve to be shut oli and unauthorized persons prevented from opening the valve.

Wev claim:

1. A valve housing having a valve seat and a neck portion above the valve seat, a head removably held in engagement with said neck and having a circuiniterentially extending groove, a valve stem extending' through said head and having threaded en-r gagement therewith, a valve head carried by said stem and movable into and out of engagement with said valve seat, a hood fitting over and enclosing said head and having opposed side openings registering with said groove, and a securing pin passing through the openings and groove and having its ends projecting beyond the hood., one end portion of said pin having an opening Afor receivingan element preventing Withdrawal of the pin.

2. The structure Ofi cla-im l having the head for the housing provided With outstanding means for engaging the neck of the housingy and a securing collar screvved upon said neck and engaging the outstanding neck engaging means` the hood having engagement With the collar to prevent movement of the collar to a head releasing position when the hood is secured in place.

3. A valvehousing having` a valve seat and a neck portion above the valve seat, a head for said housing removably held in engagement with the neck portion thereof andv having a central internally threaded sleeve and an upwardly extending' neck portion,A the head having adjacent its upper end a circum'i'ierentially" extending groo'x'e, a valve seatable upon the valve seat and hav# ing a valve stem extending through the sleeve and neck of said head and having' threaded engagement with the sleeve7 a hood itting about the head and neck portiony thereof and having a pocket receiving the upper end of said valve stem and havingside openings registering vvith the circum ferential groove of the head, and a securing:v

pin passing through the side openings and groove to hold the head in place and havingV one end provided With a head and the other end with a fastener receivingopening.

ln testimony whereof ,We hereunto aiiX our signatures. v

NICHOLAS H. FITZ GERALD. OSCAR J. MARVIN., 

